. >> to go after the taliban on the pakistani side of the border, the united states relies almost exclusively on its predator drones. but those predators require agents on the ground to direct them. >> reporter: the risks for the cia are only expected to increase here. the agency is expanding its operations both in pakistan and in afghanistan. today, the cia said its resolve was greater than ever and it vowed revenge on an enemy that managed to infiltrate one of its most important bases. nick schifrin, abc news, kabul. >>> we turn now to former cia agent bob baer, who was stationed in that part of the world, what does this attack do to gather information. >> i hit the's cats trofkic. the cia will be reluctant to send people out in the field and have them meet afghans for fear of being killed by a suicide bomber. >> can you be sure that the people that you're meeting with are legit? >> you can't always be sure. it will always be present. >> what does it say that the taliban was essentially able to infiltrate the cia, isn't it supposed to be the other way around? >> well, it's not a question of